Few political operatives are better at definding an opponent's weakspot than Karl Rove. Bush's Brain has been busy pressing the case that voters should view Barack Obama's confidence as arrogance. And it's working. He's compared Obama to a condescending know-it-all at the clubhouse. He told FoxNews the other day that Obama's overseas trip "bespoke a little of arrogance and brashness." And like a dogwhistle to the troops, his call has been heard by GOP allies from radio talker Rush Limbaugh to cable TV's Sean Hannity.

But here's the beauty part: Even the dreaded MSM -- the mainstream media -- is picking up the theme. In the latest issue of the New Republic, Gabriel Sherman found reporters complaining that Obama's campaign was "acting like the Prom Queen." New York Times' Adam Nagourney cites an unprecedended overreaction by the Obama camp to one of his stories. And the New Yorker let it be known it was excluded from Obama's overseas trip because of that satirical magazine cover in which the campaign was not amused.

Now comes Dana Milbank of The Washington Post with a piece that begins: "Barack Obama has long been his party's presumptive nominee. Now he's becoming its presumptuous nominee."

Karl certainly knows how to call them.